linux-kernel - Re: [PATCH] ASoC: mediatek: mt8188-mt6359: Remove hardcoded dmic codec

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Message-ID: <e375b833-2ec9-498d-9042-f18c3b5536f8@sirena.org.uk>
Date: Mon, 6 Jan 2025 18:30:33 +0000
From: Mark Brown <broonie@...nel.org>
To: Nícolas F. R. A. Prado <nfraprado@...labora.com>
Cc: Chen-Yu Tsai <wenst@...omium.org>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	Liam Girdwood <lgirdwood@...il.com>,
	Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>,
	Matthias Brugger <matthias.bgg@...il.com>,
	Trevor Wu <trevor.wu@...iatek.com>, kernel@...labora.com,
	linux-sound@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org, Fei Shao <fshao@...omium.org>
Subject: Re: [PATCH] ASoC: mediatek: mt8188-mt6359: Remove hardcoded dmic
 codec

On Mon, Jan 06, 2025 at 02:33:10PM -0300, Nícolas F. R. A. Prado wrote:

> My understanding is that the dmic codec was added simply to allow the usage of
> the wakeup-delays. From [1] it appears that DAI connections between two codecs
> are possible, though rare. So the PMIC -> DMic connection description might be
> possible in that way, although I'm not sure it brings any benefits besides
> closer resembling the hardware topology.

> [1] https://www.kernel.org/doc/html/latest/sound/soc/codec-to-codec.html

That's quite widely used in phones FWIW.

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